Vianey Leos Barajas
@vianeylb.bsky.social
Assistant Professor, Statistical Sciences + School of the Environment at the University of Toronto. Bayesian ecological + environmental stats. Bilingüe. ✡️🌈
https://www.vleosbarajas.com
https://www.vleosbarajas.com
Reposted by Vianey Leos Barajas
I am hiring a PhD & postdoc to work together with me at KTH on probabilistic machine learning. Both positions are fully funded and part of WASP.
I will be attending @euripsconf.bsky.social, if you are around and want to talk about the positions or what we do at KTH, then ping me and we can meet.
I will be attending @euripsconf.bsky.social, if you are around and want to talk about the positions or what we do at KTH, then ping me and we can meet.
November 23, 2025 at 11:39 AM
I am hiring a PhD & postdoc to work together with me at KTH on probabilistic machine learning. Both positions are fully funded and part of WASP.
I will be attending @euripsconf.bsky.social, if you are around and want to talk about the positions or what we do at KTH, then ping me and we can meet.
I will be attending @euripsconf.bsky.social, if you are around and want to talk about the positions or what we do at KTH, then ping me and we can meet.
Just about to submit my workshop proposal for ISEC 2027. 🎉
Two more days to submit a round table and/or workshop proposal!
We’ve already received some spectacular submissions & look forward to those that are on their way. 📉👩🏽💻🦋
We’ve already received some spectacular submissions & look forward to those that are on their way. 📉👩🏽💻🦋
One week left to submit a workshop proposal for ISEC 2027 in Mérida: statisticalecology.org
We're open to workshop topics covered in previous ISECs (www.isec2022.org/workshops/) & new topics like:
- machine learning/AI
- computer vision
- approximate/variational inference
- amortized inference
We're open to workshop topics covered in previous ISECs (www.isec2022.org/workshops/) & new topics like:
- machine learning/AI
- computer vision
- approximate/variational inference
- amortized inference
November 13, 2025 at 10:57 PM
Just about to submit my workshop proposal for ISEC 2027. 🎉
Reposted by Vianey Leos Barajas
We are hiring: 4 PhD Positions in Ecology / Data Science and one Ecological Data Scientist. For more information, see www.uni-regensburg.de/universitaet...
We are hiring: 4 PhD Positions in Ecology / Data Science and one Ecological Data Scientist
We are looking for 4 PhD Positions and one Scientific Programmer / Ecological Data Scientist to join the AG Hartig (Theoretical Ecology)
www.uni-regensburg.de
November 13, 2025 at 4:14 PM
We are hiring: 4 PhD Positions in Ecology / Data Science and one Ecological Data Scientist. For more information, see www.uni-regensburg.de/universitaet...
Reposted by Vianey Leos Barajas
A new release of the mgcv #RStats 📦 is out on CRAN and Simon Wood (U Edinburgh) has added some significant new features despite the small bump in version number:
🌟 scasm() for estimating GAMs with shape constrained smooths. Can be used with any family & smoothness selection is via the EFS method
🌟 scasm() for estimating GAMs with shape constrained smooths. Can be used with any family & smoothness selection is via the EFS method
November 12, 2025 at 11:28 AM
A new release of the mgcv #RStats 📦 is out on CRAN and Simon Wood (U Edinburgh) has added some significant new features despite the small bump in version number:
🌟 scasm() for estimating GAMs with shape constrained smooths. Can be used with any family & smoothness selection is via the EFS method
🌟 scasm() for estimating GAMs with shape constrained smooths. Can be used with any family & smoothness selection is via the EFS method
Reposted by Vianey Leos Barajas
Friends of Stats: The U. of Nebraska-Lincoln Department of Statistics needs your help. The university's Chancellor submitted a FINAL proposal today for budget cuts (budgetprocess.unl.edu/final-budget...) that eliminates the department. 1/ #LNK #Nebraska #Huskers @amstatnews.bsky.social
Final Budget Reduction Plan | Budget Process | Nebraska
budgetprocess.unl.edu
November 11, 2025 at 4:06 AM
Friends of Stats: The U. of Nebraska-Lincoln Department of Statistics needs your help. The university's Chancellor submitted a FINAL proposal today for budget cuts (budgetprocess.unl.edu/final-budget...) that eliminates the department. 1/ #LNK #Nebraska #Huskers @amstatnews.bsky.social
Reposted by Vianey Leos Barajas
....our last plenary speaker for ISEC 2027 is...🥁
Dr. Alison Johnston 🎉
Co-director of the Centre for Research into Ecological and Environmental Modelling (CREEM) & Reader in Statistics at the University of St Andrews.
Dr. Alison Johnston 🎉
Co-director of the Centre for Research into Ecological and Environmental Modelling (CREEM) & Reader in Statistics at the University of St Andrews.
November 5, 2025 at 4:34 PM
....our last plenary speaker for ISEC 2027 is...🥁
Dr. Alison Johnston 🎉
Co-director of the Centre for Research into Ecological and Environmental Modelling (CREEM) & Reader in Statistics at the University of St Andrews.
Dr. Alison Johnston 🎉
Co-director of the Centre for Research into Ecological and Environmental Modelling (CREEM) & Reader in Statistics at the University of St Andrews.
Reposted by Vianey Leos Barajas
We've got a great plenary speaker lineup -- covering theoretical ecology, statistics, AI, conservation, disease ecology, animal movement, Bayesian stats, machine learning & more!
Deadline for workshops + round tables on Nov 15: statisticalecology.org (in English o en español)
Come join us!
Deadline for workshops + round tables on Nov 15: statisticalecology.org (in English o en español)
Come join us!
November 5, 2025 at 3:01 PM
We've got a great plenary speaker lineup -- covering theoretical ecology, statistics, AI, conservation, disease ecology, animal movement, Bayesian stats, machine learning & more!
Deadline for workshops + round tables on Nov 15: statisticalecology.org (in English o en español)
Come join us!
Deadline for workshops + round tables on Nov 15: statisticalecology.org (in English o en español)
Come join us!
Reposted by Vianey Leos Barajas
📣 Plenary speaker #3:
Dr. Mevin Hooten 🐾
Professor of Statistics & Data Science at the University of Texas at Austin. Author of multiple books on Bayesian statistics and leading expert in statistical methods for the analysis of animal movement.
statisticalecology.org
Dr. Mevin Hooten 🐾
Professor of Statistics & Data Science at the University of Texas at Austin. Author of multiple books on Bayesian statistics and leading expert in statistical methods for the analysis of animal movement.
statisticalecology.org
October 29, 2025 at 8:04 PM
📣 Plenary speaker #3:
Dr. Mevin Hooten 🐾
Professor of Statistics & Data Science at the University of Texas at Austin. Author of multiple books on Bayesian statistics and leading expert in statistical methods for the analysis of animal movement.
statisticalecology.org
Dr. Mevin Hooten 🐾
Professor of Statistics & Data Science at the University of Texas at Austin. Author of multiple books on Bayesian statistics and leading expert in statistical methods for the analysis of animal movement.
statisticalecology.org
Reposted by Vianey Leos Barajas
📣 Announcing our first plenary speaker:
Dr. Jason Matthiopoulos 🎉
He is a professor at the University of Glasgow whose work focuses on modelling the patterns and mechanisms that characterise spatial and population ecology.
statisticalecology.org
Dr. Jason Matthiopoulos 🎉
He is a professor at the University of Glasgow whose work focuses on modelling the patterns and mechanisms that characterise spatial and population ecology.
statisticalecology.org
October 28, 2025 at 3:56 AM
📣 Announcing our first plenary speaker:
Dr. Jason Matthiopoulos 🎉
He is a professor at the University of Glasgow whose work focuses on modelling the patterns and mechanisms that characterise spatial and population ecology.
statisticalecology.org
Dr. Jason Matthiopoulos 🎉
He is a professor at the University of Glasgow whose work focuses on modelling the patterns and mechanisms that characterise spatial and population ecology.
statisticalecology.org
Reposted by Vianey Leos Barajas
📣 Plenary speaker #2:
Dr. Erin Mordecai
Associate Professor of Biology at Stanford University. Her lab uses mathematical models and empirical data to study the ecology of infectious diseases. 📈🦟
statisticalecology.org
Dr. Erin Mordecai
Associate Professor of Biology at Stanford University. Her lab uses mathematical models and empirical data to study the ecology of infectious diseases. 📈🦟
statisticalecology.org
October 29, 2025 at 4:45 AM
📣 Plenary speaker #2:
Dr. Erin Mordecai
Associate Professor of Biology at Stanford University. Her lab uses mathematical models and empirical data to study the ecology of infectious diseases. 📈🦟
statisticalecology.org
Dr. Erin Mordecai
Associate Professor of Biology at Stanford University. Her lab uses mathematical models and empirical data to study the ecology of infectious diseases. 📈🦟
statisticalecology.org
Reposted by Vianey Leos Barajas
moveHMM version 1.0 turns 10 today 🎉 Such a fun 10 years; exchanging with folks who use the package (and its extensions) has been one of the best parts of my job!
October 23, 2025 at 1:18 PM
moveHMM version 1.0 turns 10 today 🎉 Such a fun 10 years; exchanging with folks who use the package (and its extensions) has been one of the best parts of my job!
Reposted by Vianey Leos Barajas
Previous workshops covered models for eDNA, animal movement, hierarchical Bayesian models, NIMBLE, Stan, INLA, space/habitat use, species distribution models, generalized additive models!
We're open to similar workshops + machine learning, AI topics.
Deadline Nov. 15th: statisticalecology.org 🧪
We're open to similar workshops + machine learning, AI topics.
Deadline Nov. 15th: statisticalecology.org 🧪
Home - ISEC 2027
Call for Workshop Submissions, Deadline Nov 15th -- Submit Workshop Proposal Call for Roundtable Submissions, Deadline Nov 15th -- Submit Roundtable Proposal The International Statistical Ecology Conf...
statisticalecology.org
October 20, 2025 at 4:31 PM
Previous workshops covered models for eDNA, animal movement, hierarchical Bayesian models, NIMBLE, Stan, INLA, space/habitat use, species distribution models, generalized additive models!
We're open to similar workshops + machine learning, AI topics.
Deadline Nov. 15th: statisticalecology.org 🧪
We're open to similar workshops + machine learning, AI topics.
Deadline Nov. 15th: statisticalecology.org 🧪
Reposted by Vianey Leos Barajas
ISEC is a ~biennial conference that brings together statisticians, ecologists, & other quantitative researchers to develop & apply quantitative methods to answer critical ecological questions. 🦋📈🐾
Check out ISEC 2022 (www.isec2022.org) for examples of workshops & talks at previous iterations. 🧪
Check out ISEC 2022 (www.isec2022.org) for examples of workshops & talks at previous iterations. 🧪
Workshops | ISEC 2022
www.isec2022.org
October 20, 2025 at 4:31 PM
ISEC is a ~biennial conference that brings together statisticians, ecologists, & other quantitative researchers to develop & apply quantitative methods to answer critical ecological questions. 🦋📈🐾
Check out ISEC 2022 (www.isec2022.org) for examples of workshops & talks at previous iterations. 🧪
Check out ISEC 2022 (www.isec2022.org) for examples of workshops & talks at previous iterations. 🧪
Reposted by Vianey Leos Barajas
The next International Statistical Ecology Conference (ISEC) will take place on January 8-15, 2027, in Mérida, México.
Calls for workshop and roundtable proposals now open, deadline Nov 15, 2025 (anywhere on earth).
Visit statisticalecology.org for more information. 🧪
Please share widely 📈🦋🐾
Calls for workshop and roundtable proposals now open, deadline Nov 15, 2025 (anywhere on earth).
Visit statisticalecology.org for more information. 🧪
Please share widely 📈🦋🐾
Home - ISEC 2027
Call for Workshop Submissions, Deadline Nov 15th -- Submit Workshop Proposal Call for Roundtable Submissions, Deadline Nov 15th -- Submit Roundtable Proposal The International Statistical Ecology Conf...
statisticalecology.org
October 13, 2025 at 5:52 PM
The next International Statistical Ecology Conference (ISEC) will take place on January 8-15, 2027, in Mérida, México.
Calls for workshop and roundtable proposals now open, deadline Nov 15, 2025 (anywhere on earth).
Visit statisticalecology.org for more information. 🧪
Please share widely 📈🦋🐾
Calls for workshop and roundtable proposals now open, deadline Nov 15, 2025 (anywhere on earth).
Visit statisticalecology.org for more information. 🧪
Please share widely 📈🦋🐾
Reposted by Vianey Leos Barajas
I'm looking for a doctoral student with Bayesian background to work on Bayesian workflow and cross-validation (see my publication list users.aalto.fi/~ave/publica... for my recent work) at Aalto University.
Apply through the ELLIS PhD program (dl October 31) ellis.eu/news/ellis-p...
Apply through the ELLIS PhD program (dl October 31) ellis.eu/news/ellis-p...
ELLIS PhD Program: Call for Applications 2025
The ELLIS mission is to create a diverse European network that promotes research excellence and advances breakthroughs in AI, as well as a pan-European PhD program to educate the next generation of AI...
ellis.eu
October 6, 2025 at 9:28 AM
I'm looking for a doctoral student with Bayesian background to work on Bayesian workflow and cross-validation (see my publication list users.aalto.fi/~ave/publica... for my recent work) at Aalto University.
Apply through the ELLIS PhD program (dl October 31) ellis.eu/news/ellis-p...
Apply through the ELLIS PhD program (dl October 31) ellis.eu/news/ellis-p...
Reposted by Vianey Leos Barajas
The Sierra Nevada’s glaciers—now projected to disappear by 2100 CE—have never before vanished throughout human history in the Americas.
Learn more in #ScienceAdvances: https://scim.ag/3KouoUR
Learn more in #ScienceAdvances: https://scim.ag/3KouoUR
Glaciers in California’s Sierra Nevada are likely disappearing for the first time in the Holocene
The projected loss of glaciers in California’s Sierra Nevada is likely unprecedented in at least the past 30,000 years.
scim.ag
October 3, 2025 at 6:11 PM
The Sierra Nevada’s glaciers—now projected to disappear by 2100 CE—have never before vanished throughout human history in the Americas.
Learn more in #ScienceAdvances: https://scim.ag/3KouoUR
Learn more in #ScienceAdvances: https://scim.ag/3KouoUR
Reposted by Vianey Leos Barajas
Proposals for contributed talks & posters are now being accepted for the 2026 ISBA World Meeting! The world meeting will take place in Nagoya, Japan between 28 June and 3 July, 2026. Proposals may be submitted here: forms.gle/dVTUrdEuVF6g...
September 24, 2025 at 10:33 PM
Proposals for contributed talks & posters are now being accepted for the 2026 ISBA World Meeting! The world meeting will take place in Nagoya, Japan between 28 June and 3 July, 2026. Proposals may be submitted here: forms.gle/dVTUrdEuVF6g...
Reposted by Vianey Leos Barajas
We will co-host the next Statistical Methods webinar on October 6 at noon US ET with the @ecologicalsociety.bsky.social Statistical Ecology Section
Kenneth Kellner will present “The {unmarked} R package for fitting hierarchical models of animal abundance and occurrence”
Register at: bit.ly/3H7tri7
Kenneth Kellner will present “The {unmarked} R package for fitting hierarchical models of animal abundance and occurrence”
Register at: bit.ly/3H7tri7
Welcome! You are invited to join a webinar: EFI-ESA Stats Seminar: The {unmarked} R package for fitting hierarchical models of animal abundance and occurrence. After registering, you will receive a c...
This Statistical Methods seminar by the Ecological Forecasting Initiative and the Ecological Society of America Statistical Ecology Section is hosting Dr. Kenneth Kellner from Michigan State Universit...
bit.ly
September 22, 2025 at 5:58 PM
We will co-host the next Statistical Methods webinar on October 6 at noon US ET with the @ecologicalsociety.bsky.social Statistical Ecology Section
Kenneth Kellner will present “The {unmarked} R package for fitting hierarchical models of animal abundance and occurrence”
Register at: bit.ly/3H7tri7
Kenneth Kellner will present “The {unmarked} R package for fitting hierarchical models of animal abundance and occurrence”
Register at: bit.ly/3H7tri7
Reposted by Vianey Leos Barajas
The new Bayesian Social Sciences section of @isba-bayesian.bsky.social has just been created: bss-isba.github.io. The committee is myself as chair, @robinryder.bsky.social, chair elect from 2027, @nialfriel.bsky.social, program chair, @monjalexander.bsky.social, Treasurer, EJWagenmakers, Secretary.
Home - BSS-ISBA
bss-isba.github.io
September 22, 2025 at 9:21 AM
The new Bayesian Social Sciences section of @isba-bayesian.bsky.social has just been created: bss-isba.github.io. The committee is myself as chair, @robinryder.bsky.social, chair elect from 2027, @nialfriel.bsky.social, program chair, @monjalexander.bsky.social, Treasurer, EJWagenmakers, Secretary.
Reposted by Vianey Leos Barajas
The Department of Statistics at the University of Nebraska–Lincoln is under threat of closure, with tenured faculty facing dismissal. This is a small but globally impactful department.
Please consider writing a letter of support. Your voice could make a real difference.
Please consider writing a letter of support. Your voice could make a real difference.
September 19, 2025 at 4:28 AM
The Department of Statistics at the University of Nebraska–Lincoln is under threat of closure, with tenured faculty facing dismissal. This is a small but globally impactful department.
Please consider writing a letter of support. Your voice could make a real difference.
Please consider writing a letter of support. Your voice could make a real difference.
Reposted by Vianey Leos Barajas
MC Stan is here! Follow for the latest Stan news, and tag if you want us to repost your posts about new papers, packages, courses, etc. about Stan
September 17, 2025 at 3:16 PM
MC Stan is here! Follow for the latest Stan news, and tag if you want us to repost your posts about new papers, packages, courses, etc. about Stan
Reposted by Vianey Leos Barajas
My University has decided to close the #Statistics department along with several others. The public comment form opened up today: apc.unl.edu/fall-2025-bu...
Please feel free to explain how problematic it is to close a department teaching #datascience #rstats #python in this day and age.
Please feel free to explain how problematic it is to close a department teaching #datascience #rstats #python in this day and age.
Fall 2025 Budget Reduction Feedback Form | Academic Planning Committee | Nebraska
apc.unl.edu
September 15, 2025 at 4:54 PM
My University has decided to close the #Statistics department along with several others. The public comment form opened up today: apc.unl.edu/fall-2025-bu...
Please feel free to explain how problematic it is to close a department teaching #datascience #rstats #python in this day and age.
Please feel free to explain how problematic it is to close a department teaching #datascience #rstats #python in this day and age.
Reposted by Vianey Leos Barajas
We are seeking a postdoctoral researcher in statistics to develop methods for analyzing large scale biodiversity and ecosystem function data at the University of Helsinki.
This is a great opportunity for someone who wants to do advanced Bayesian modeling with direct link to real world applications.
This is a great opportunity for someone who wants to do advanced Bayesian modeling with direct link to real world applications.
📢 Post doc! Want to join our team?
We are looking for 3 post docs in biodiversity science, genetic indicator assessment, and ecological statistics for a fixed term of 2 years!
Come unravel the drivers and consequences of global change on biodiversity with us!
DL 24.9.
#universityofhelsinki
We are looking for 3 post docs in biodiversity science, genetic indicator assessment, and ecological statistics for a fixed term of 2 years!
Come unravel the drivers and consequences of global change on biodiversity with us!
DL 24.9.
#universityofhelsinki
3 Post doc positions in biodiversity science, genetic indicator assessment and ecological statistics
3 Post doc positions in biodiversity science, genetic indicator assessment and ecological statistics
jobs.helsinki.fi
September 3, 2025 at 12:58 PM
We are seeking a postdoctoral researcher in statistics to develop methods for analyzing large scale biodiversity and ecosystem function data at the University of Helsinki.
This is a great opportunity for someone who wants to do advanced Bayesian modeling with direct link to real world applications.
This is a great opportunity for someone who wants to do advanced Bayesian modeling with direct link to real world applications.
Reposted by Vianey Leos Barajas
Stan / CmdStan 2.37 release!
blog.mc-stan.org/2025/09/02/r...
- sum_to_zero_matrix type sums to zero across both rows and columns
- simplex and *_stochastic_matrix types should be now faster and more stable
- new functions exposing the built-in constraint implementations
1/2
blog.mc-stan.org/2025/09/02/r...
- sum_to_zero_matrix type sums to zero across both rows and columns
- simplex and *_stochastic_matrix types should be now faster and more stable
- new functions exposing the built-in constraint implementations
1/2
Release of CmdStan 2.37
We are very happy to announce that the 2.37.0 release of CmdStan is now available on Github! As usual, the release of CmdStan is accompanied by new releases of Stan Math, core Stan, and Stanc3. Thi…
blog.mc-stan.org
September 2, 2025 at 5:06 PM
Stan / CmdStan 2.37 release!
blog.mc-stan.org/2025/09/02/r...
- sum_to_zero_matrix type sums to zero across both rows and columns
- simplex and *_stochastic_matrix types should be now faster and more stable
- new functions exposing the built-in constraint implementations
1/2
blog.mc-stan.org/2025/09/02/r...
- sum_to_zero_matrix type sums to zero across both rows and columns
- simplex and *_stochastic_matrix types should be now faster and more stable
- new functions exposing the built-in constraint implementations
1/2
Reposted by Vianey Leos Barajas
AI efficiency is important. The median Gemini Apps text prompt in May 2025 used 0.24 Wh of energy (<9 seconds of TV watching) & 0.26 mL (~5 drops) of water. Over 12 months, we reduced the energy footprint of a median text prompt 33x, while improving quality:
cloud.google.com/blog/product...
cloud.google.com/blog/product...
August 21, 2025 at 1:39 PM
AI efficiency is important. The median Gemini Apps text prompt in May 2025 used 0.24 Wh of energy (<9 seconds of TV watching) & 0.26 mL (~5 drops) of water. Over 12 months, we reduced the energy footprint of a median text prompt 33x, while improving quality:
cloud.google.com/blog/product...
cloud.google.com/blog/product...